Method for mixing and processing wash oil and direct coal liquefaction oil

A technology for direct liquefaction of coal and a processing method, which is applied in refining to remove heteroatoms, etc., can solve the problem of not including washing oil, and achieve the effects of avoiding excessive temperature rise, promoting coal conversion, and improving economy.

Active Publication Date: 2012-06-27
CHNA ENERGY INVESTMENT CORP LTD +2
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AI Technical Summary

Problems solved by technology

However, this method does not include wash oil as a solvent and the method of mixing wash oil with coal direct li

Method used

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  • Method for mixing and processing wash oil and direct coal liquefaction oil
  • Method for mixing and processing wash oil and direct coal liquefaction oil
  • Method for mixing and processing wash oil and direct coal liquefaction oil

Examples

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Example Embodiment

[0059] Example 1

[0060] The direct coal liquefied oil and washing oil shown in Table 1 were mixed at a mass ratio of 90:10. The properties of the mixed raw oil after mixing are shown in Table 1, and the group composition analysis data of the washing oil is shown in Table 2.

[0061] The test process is as follows:

[0062] Carry out hydrogenation test on the mixed feedstock oil, the obtained full-distillate oil is distilled and cut into three fractions, namely light distillate oil less than 220°C, heavy distillate oil greater than 350°C, and medium distillate oil from 220°C to 350°C oil. Mixing 3 / 4 weight of the medium distillate oil with the heavy distillate oil above 350° C. to obtain a hydrogen supply solvent. Mix the remaining 1 / 4 of the medium distillate oil with the light distillate oil below 220°C to obtain the crude oil of the liquefied product, and carry out the hydro-upgrading test of the crude oil of the liquefied product according to the conventional method. The whol...

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Abstract

The invention provides a method for mixing and processing wash oil and direct coal liquefaction oil, which includes the following steps: (a) mixing the wash oil and the direct coal liquefaction oil to be mixed with hydrogen, and enabling the mixture to enter a mixed oil hydrogenation reactor; (b) enabling mixture of the wash oil, the direct coal liquefaction oil and the hydrogen in the step (a) to be contacted with hydrofining catalyst to be subjected to a reaction in the mixed oil hydrogenation reactor; and (c) separating and fractionating objects obtained from the reaction of step (b) and discharged from an outlet of the mixed oil hydrogenation reactor to obtain light distillate oil, medium distillate oil and heavy distillate oil. The heavy distillate oil is mixed with a part of the medium distillate oil to serve as hydrogen-donor solvent, and the light distillate oil is mixed with the rest medium distillate oil to obtain liquefaction product raw oil. The method can effectively convert coal tar and wash oil, obtains high-performance hydrogen-donor solvent and diesel products with high cetane number, and can avoid a phenomenon of speeding up deactivation of catalyst caused by overlarge reaction temperature rise in an independent hydrogenation process for the wash oil.

Description

technical field [0001] The invention relates to a method for mixing washing oil and coal direct liquefied oil. Specifically, the present invention relates to a method for producing hydrogen-donating solvent and light liquid fuel for direct coal liquefaction by mixing washing oil and direct coal liquefaction oil in a certain proportion through a hydrogenation process. Background technique [0002] With the development of economy and social progress, people's demand for engine fuel is increasing, and the quality requirements for engine fuel are also getting higher and higher. Due to the limitation of oil resource reserves and extraction volume, the price of crude oil continues to rise, which provides a good opportunity for the development of oil alternative energy technology. [0003] In recent years, the research and development of coal direct liquefaction and coal indirect liquefaction technology has made continuous progress, and industrial demonstration devices have been b...

Claims

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Application Information

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IPC IPC(8): C10G45/02
Inventor 胡云剑石玉林金环年白雪梅马辉李丽
Owner CHNA ENERGY INVESTMENT CORP LTD
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